loopback/node_modules/model/lib/model.js

/**
 * Expose `Model`.
 */

module.exports = Model;

/**
 * Module dependencies.
 */
 
var AsteroidModule = require('asteroid-module')
  , debug = require('debug')('model')
  , util = require('util')
  , inherits = util.inherits
  , assert = require('assert');
  
/**
 * Create a new `Model` with the given `options`.
 *
 * @param {Object} options
 * @return {Model}
 */

function Model(options) {
  AsteroidModule.apply(this, arguments);
  
  // throw an error if args are not supplied
  // assert(typeof options === 'object', 'Model requires an options object');
  
  this.options = options;
  
  debug('created with options', options);
  
  var dependencies = this.dependencies;
  var dataSource = dependencies['data-source'];
  var schema = this.schema = dataSource.schema;
  
  assert(Array.isArray(options.properties), 'the ' + options._name + ' model requires an options.properties array');
  
  // define schema
  this.schema = schema.define(options.namespace || options._name, this.buildSchemaDefinition(options.properties));
}

/**
 * Inherit from `AsteroidModule`.
 */

inherits(Model, AsteroidModule);

/**
 * Dependencies.
 */

Model.dependencies = {
  'data-source': 'data-source'
};

/**
 * Build a jugglingdb compatibile schema definition from property array.
 */

Model.prototype.buildSchemaDefinition = function (properties) {
  return properties.reduce(function (prev, cur) {
    prev[cur.name] = types[cur.type];
    return prev;
  }, {});
}

var types = [String, Number, Date, Array, Boolean].reduce(function (prev, cur) {
  prev[cur.name.toLowerCase()] = cur
  return prev;
}, {});